Reputation · trust score
A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.
- Baseline (neutral) 65
- Long-established allocation (28y) +6
- Not on any threat blocklist +5
- Has a reverse-DNS (PTR) record +5
- Trust score 81 / 100
Experimental · trust-vectors model v1.1.0 — a transparent heuristic, not a definitive verdict. How it works →
DNS records
- Reverse DNS (PTR)
- websec.sv.cmu.edu
- Forward-confirmed (FCrDNS)
- Not checked
- PTR TTL
- 3600 s
- Reverse DNS last checked
- 2026-07-19 13:30 UTC
- Forward DNS last checked
- 2026-07-19 13:30 UTC
Forward DNS records for websec.sv.cmu.edu
Reverse & forward DNS collected by the WorldIP scanner fleet — FCrDNS confirms the PTR hostname resolves back to this IP.
Network Allocation for 212.237.217.251
- CIDR range
- 212.237.216.0/22
- IP range (int)
- 3,572,357,120 — 3,572,358,143
- Prefix length
- /22
- Organization
- Hostkey B.v.
- ASN
- AS57043
- ASN name
- Hostkey B.v.
- Location
- Helsinki, Uusimaa, Finland
- Coordinates
- 60.171900, 24.934700
- Accuracy radius
- 20 km
- Postal code
- 00221
- Regional Internet Registry
- RIPE
- Allocated
- 1998-09-25
- Data source(s)
- maxmind_city, maxmind_country, maxmind_asn, ipinfo_lite
- Last updated
- 2026-07-11 09:24:56
BGP Routing
Live BGP anomalies →Origin AS announcing the most-specific prefix that covers this IP, observed across our RIPE RIS collectors.
RIR Ownership History
Atom feed ⇲Allocation changes captured weekly from regional internet registry (RIR) delegation files for ranges that have contained this IP.
| Date | Event | From | To |
|---|---|---|---|
| 2026-05-10 | Country Change | FI | NL |
See the full history for 212.237.216.0/22.
Frequently Asked Questions
Who owns 212.237.217.251?
212.237.217.251 is allocated to Hostkey B.v. (AS57043), registered in Helsinki, Finland.
Where is 212.237.217.251 located?
The geolocation for 212.237.217.251 maps to Helsinki, Finland based on MaxMind GeoLite2 data. Accuracy depends on the provider and may represent the ISP's regional hub rather than the exact endpoint.
What network is 212.237.217.251 on?
212.237.217.251 belongs to the 212.237.216.0/22 network block announced by AS57043. This range contains 1,024 addresses.
Does 212.237.217.251 have a reverse DNS record?
Reverse DNS (PTR) records are resolved live when you visit this page. If a PTR record exists, it appears in the Reverse DNS field above. PTR records map IP addresses back to hostnames and are commonly used for email authentication and network diagnostics.
Neighbors
Other addresses in the same /24.
